Home / 13,905.64-19,189.56-7,937.15

Finding the Fourth Proportional to 13,905.64, 19,189.56 and 7,937.15

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Solution

The fourth proportional to 13,905.64, 19,189.56 and 7,937.15 is: 10,953.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.64 : 19,189.56 = 7,937.15 : x
  2. Step 2: Convert to fraction form
    13,905.64/19,189.56 = 7,937.15/x
  3. Step 3: Cross multiply
    13,905.64x = 19,189.56 × 7,937.15
  4. Step 4: Simplify right side
    13,905.64x = 152,310,416.15
  5. Step 5: Solve for x
    x = 152,310,416.15/13,905.64
  6. Step 6: Final answer
    x = 10,953.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.